Crohn's disease can affect people very differently. Many people have only mild symptoms. They do not require continuous treatment with medication.
Others require multiple medications and develop complications. Crohn's disease improves with treatment. It is not a fatal illness, but it cannot be cured.
Crohn's requires people to pay special attention to their health needs and to seek frequent medical care. But it does not prevent most people from having normal jobs and productive family lives.
It can be helpful for a newly diagnosed person to seek advice from a support group of other people with the disease.